<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    
    <!-- 卡片视图区 -->
    <el-card>
      <!-- 搜索与添加区 -->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input clearable placeholder="请输入内容" 
          v-model="queryInfo.query" @clear="getUserList">
            <el-button slot="append" icon="el-icon-search" 
            @click="getUserList">
            </el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
        </el-col>
      </el-row>

      <!-- 用户列表区 -->
      <el-table :data="userlist" border stripe>
        <el-table-column type="index"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态">
          <template slot-scope="scope">
            <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)"></el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="180px">
            <template slot-scope="scope">
                <el-tooltip  effect="dark" content="修改" placement="top-start" :enterable="false">
                    <!-- 修改按钮 -->
                    <el-button type="primary" icon="el-icon-edit" 
                    size="mini" @click="showEditDialog(scope.row.id)"></el-button>
                </el-tooltip>
                <el-tooltip  effect="dark" content="删除" placement="top-start" :enterable="false">
                    <!-- 删除按钮 -->
                    <el-button type="danger" icon="el-icon-delete" size="mini" 
                    @click="removeUserById(scope.row.id)"></el-button>
                </el-tooltip>
                <el-tooltip  effect="dark" content="分配角色" placement="top-start" :enterable="false">
                    <!-- 分配角色按钮 -->
                    <el-button type="warning" icon="el-icon-setting" 
                    size="mini" @click="setRole(scope.row)"></el-button>
                </el-tooltip>
            </template>
        </el-table-column>
      </el-table>

      <!-- 分页区 -->
       <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total">
    </el-pagination>
    </el-card>

    <!-- 添加用户的对话框 -->
    <el-dialog title="添加用户" :visible.sync="addDialogVisible" width="50%"
     @close="addDialogClosed">
        <!-- 内容主体区 -->
        <el-form :model="addForm" :rules="addFormRules" 
        ref="addFormRef" label-width="70px">
            <el-form-item label="用户名" prop="username">
                <el-input v-model="addForm.username"></el-input>
            </el-form-item>        
            <el-form-item label="密码" prop="password" >
                <el-input v-model="addForm.password"></el-input>
            </el-form-item>       
            <el-form-item label="邮箱" prop="email">
                <el-input v-model="addForm.email"></el-input>
            </el-form-item>
            <el-form-item label="手机" prop="mobile">
                <el-input v-model="addForm.mobile"></el-input>
            </el-form-item>
        </el-form>
        <!-- 底部区 -->
        <span slot="footer" class="dialog-footer">
            <el-button @click="addDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="addUser">确 定</el-button>
        </span>
    </el-dialog>

    <!-- 编辑用户的对话框 -->
    <el-dialog title="修改用户" :visible.sync="editDialogVisible"
     width="50%" @close="editDialogClosed">
         <!-- 内容主体区 -->
        <el-form :model="editForm" :rules="editFormRules" 
        ref="editFormRef" label-width="70px">
            <el-form-item label="用户名">
                <el-input v-model="editForm.username" disabled></el-input>
            </el-form-item>             
            <el-form-item label="邮箱" prop="email">
                <el-input v-model="editForm.email"></el-input>
            </el-form-item>
            <el-form-item label="手机" prop="mobile">
                <el-input v-model="editForm.mobile"></el-input>
            </el-form-item>
        </el-form>
        <!-- 底部区 -->
        <span slot="footer" class="dialog-footer">
            <el-button @click="editDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="editUserInfo">确 定</el-button>
        </span>
    </el-dialog>

    <!-- 分配角色的对话框 -->
    <el-dialog title="分配角色" :visible.sync="setRoleDialogVisible" width="50%" 
    @close="setRoleDialogClosed">
      <div>
        <p>当前的用户：{{userInfo.username}}</p>
        <p>当前的角色：{{userInfo.role_name}}</p>
        <p>分配新角色：
          <el-select v-model="selectedRoleId" placeholder="请选择">
            <el-option
              v-for="item in rolesList"
              :key="item.id"
              :label="item.roleName"
              :value="item.id">
            </el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>

  </div>
</template>

<script>
export default {
    data() {
        // 验证邮箱的校验规则
        var checkEmail = (rule, value, cb) => {
            // 验证邮箱的正则
            const regEmail = /^[A-Za-z\d]+([-_.][A-Za-z\d]+)*@([A-Za-z\d]+[-.])+[A-Za-z\d]{2,4}$/
            // test检验
            if (regEmail.test(value)) {
                // 合法
                return cb()
            }
            cb(new Error('请输入合法的邮箱'))
        }
        // 验证手机的校验规则
        var checkMobile = (rule, value, cb) => {
            // 验证手机号的正则
            const regMobile =  /^[1][3,4,5,7,8][0-9]{9}$/
            if (regMobile.test(value)) {
                // 正确
                return cb()
            }
            cb(new Error('请输入正确的手机号'))
        }
        return {
            // 获取用户列表的参数对象
          queryInfo: {
                // 搜索关键字
                query: '',
                // 当前页数
                pagenum: 1,
                // 当前每页显示多少条数据
                pagesize: 2,
          },
          userlist: [],
          total: 0,
          // 控制添加用户的对话框的显示与隐藏
          addDialogVisible: false,
          // 控制编辑用户的对话框的显示与隐藏
          editDialogVisible: false,
          // 添加对象的表单数据   :model="addForm"
          addForm: {
                username: '',
                password: '',
                email: '',
                mobile:''
          },
          // 添加表单的验证规则对象   :rules="addFormRules"
          addFormRules: {
                // username 表单验证规则  prop="username"
                username: [
                    {
                        required: true,
                        message: '请输入用户名',
                        trigger: 'blur'
                    },
                    {
                        min: 3,
                        max: 10,
                        message: '用户名的长度在3-10个字符之间',
                        trigger: 'blur'
                    }
                ],
                password: [
                    {
                        required: true,
                        message: '请输入密码',
                        trigger: 'blur'
                    },
                    {
                        min: 6,
                        max: 15,
                        message: '密码的长度在6-15个字符之间',
                        trigger: 'blur'
                    }
                ],
                email: [
                    {
                        required: true,
                        message: '请输入邮箱',
                        trigger: 'blur'
                    },
                    {
                        validator: checkEmail,
                        trigger: 'blur'
                    }
                ],
                mobile: [
                    {
                        required: true,
                        message: '请输入手机号',
                        trigger: 'blur'
                    },
                    {
                        validator: checkMobile,
                        trigger: 'blur'
                    }
                ]
          },
          // 查询到的用户信息对象
          editForm: {},
          // 查询到的用户信息对象的验证规则对象
          editFormRules: {
                email: [
                    {
                        required: true,
                        message: '请输入邮箱',
                        trigger: 'blur'
                    },
                    {
                        validator: checkEmail,
                        trigger: 'blur'
                    }
                ],
                mobile: [
                    {
                        required: true,
                        message: '请输入手机号',
                        trigger: 'blur'
                    },
                    {
                        validator: checkMobile,
                        trigger: 'blur'
                    }
                ]
          },
          // 控制分配角色的对话框的显示与隐藏
          setRoleDialogVisible: false,
          // 需要被分配的角色的用户信息
          userInfo: {},
          // 所有角色的数据列表
          rolesList: [],
          // 已选中的角色ID值
          selectedRoleId:''
    }
  },
  created() {
    this.getUserList()
  },
  methods: {
    async getUserList() {
      const { data: res } = await this.$http.get('users', {
        params: this.queryInfo,
      })
    //   console.log(res)
      if (res.meta.status !== 200) {
        return this.$message.error('获取用户列表失败')
      }
      this.userlist = res.data.users
      this.total = res.data.total
      },
    // 监听pagesize改变的函数  
    // handleSizeChange 可以监听到最新的pagesize
      handleSizeChange(newSize) {
        //   console.log(newSize);
          this.queryInfo.pagesize = newSize
        this.getUserList()
      },
    //   监听页码值改变得函数
      handleCurrentChange(newPage) {
        //   console.log(newPage);
          this.queryInfo.pagenum = newPage
        this.getUserList()
      },
    // 监听 switch 开关状态的改变
      async userStateChanged(userInfo) {
        //   console.log(userInfo);
          const { data:res } = await this.$http.put(`users/${userInfo.id}/state/${userInfo.mg_state}`)
          if (res.meta.status !== 200) {
                userInfo.mg_state = !userInfo.mg_state
                return this.$message.error('更新用户状态失败')
          } 
            this.$message.success('更新用户状态成功')
      },
    // 监听添加用户对话框的关闭事件
      addDialogClosed() {
        // 重置表单
        this.$refs.addFormRef.resetFields()
      },
    // 点击按钮 添加新用户
       addUser() {
          this.$refs.addFormRef.validate(async valid => {
            // console.log(valid);  ture  or  false
            if (!valid) return 
            // 发起添加用户的网络请求
            const { data: res } = await this.$http.post('users', this.addForm)
            if (res.meta.status !== 201) {
                this.$message.error('添加失败')
              }
            this.$message.success('添加成功')         
            this.addDialogVisible = false
            this.getUserList()
        })
      },
    // 展示编辑用户的对话框
      async showEditDialog(id) {
        const { data: res } = await this.$http.get(`users/${id}`)
          if (res.meta.status !== 200) {
            return this.$message.error('查询用户信息失败')
        }
        this.editForm = res.data
        this.editDialogVisible = true
      },
    // 监听编辑用户对话框的关闭事件
      editDialogClosed() {
        // 重置表单
        this.$refs.editFormRef.resetFields()
      },
    // 编辑用户信息并提交
      editUserInfo() {
        this.$refs.editFormRef.validate(async valid => {
            if (!valid) return 
            //   发请求
              const { data: res } = await this.$http.put(`users/${this.editForm.id}`,
                  {
                      email: this.editForm.email,
                      mobile: this.editForm.mobile
                  })
              if (res.meta.status !== 200) {
                this.$message.error('修改失败')
              }
            this.$message.success('修改成功') 
            this.getUserList()
            this.editDialogVisible = false
        })

      },
    // 删除用户
      removeUserById(id) {
        // 弹窗提示 询问是否删除
        this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).then(async() => {
            const { data: res } = await this.$http.delete(`users/${id}`)
            if (res.meta.status !== 200) {
                this.$message.error('删除失败')
            }
            this.getUserList()
            this.$message({
            type: 'success',
            message: '删除成功!'
          });
        }).catch(() => {
          this.$message({
            type: 'info',
            message: '已取消删除'
          });          
        });
    },
    // 展示分配角色的对话框
    async setRole(userInfo) {
      // console.log(userInfo);
      this.userInfo = userInfo
      // 在展示对话框之前获取所有的角色列表
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) {
        return this.$message.error('获取失败')
      }
      this.rolesList = res.data
      this.setRoleDialogVisible =true
    },
    // 点击按钮分配角色
    async saveRoleInfo() {
      if (!this.selectedRoleId) {
        return this.$message.error('请选择要分配的角色')
      }
      const { data:res } = await this.$http.put(`users/${this.userInfo.id}/role`, { rid: this.selectedRoleId })
      if (res.meta.status !== 200) {
        return this.$message.error('分配的角色失败')
      }
      this.$message.success('分配的成功')
      this.getUserList()
      this.setRoleDialogVisible = false
    },
    //监听分配角色对话框的关闭事件 
    setRoleDialogClosed() {
      this.selectedRoleId = ''
      this.userInfo = {}
    }
    
  },
}
</script>

<style lang="less" scoped>

</style>
